Wall structure



Aug. 19, 1930.

C. T. CARLSON WALL STRUCTURE Filed Feb. 3, 1928 IN VEN TOR.

A TTORNEYS.

Patented Aug. 19 1939 i ED 1 STATES PATENT OFFECE CARL THOMAS CARIJSON, OF OHATTANOOGA, TENNESSEE, ASSIGNOR TO ERIE CITY IRON WORKS, OF ERIE, 1:EN NSYLVANIA, A CORPORATION OF PENNSYLVANIA v I WALL STRUCTURE I Application filed February 3, 1928. Serial No. 251,627.

v gether and the present invention is directed to a structure for accomplishing this purpose.

A preferred embodiment of the invention is illustrated in the accompanying drawings as follows Fig. 1 shows a vertical section through the wall on the line 11 in Fig. 2.

Fig. 2 an elevation of the inner face of the wall.

Fig. 3 a perspective view of one of the cross tie bricks. I Y g Fig. 4 a perspective view of a tie plate.

1 marks the inner wall. This is formed of refractory brick. Arranged in this wall are cross bricks 2 preferably of a thickness involving two courses of the ordinary brick. This cross brick projects outwardly from the outer face of the inner wall and has a lip 3.

The outer wall 4: may be formed with ordiinner wall and having inserted in its courses a metal plate projecting from the inner face CARL THOMAS CARLSON.

nary brick. Arranged between courses of the brick is a tie plate 5 with a turned-up edge, or hook 6 at its inner end. This hook engages the lip 3.

It will be noted that using the metal plate permits of a comparatively thin hook 6 giving up to the lip 3 formed on the cross brick the greater part of the available space between thewalls, thus making it possible to make the lip of the cross brick of sufficient strength. v

I prefer to step the courses 7 immediately below the plate 5 inwardly from the inner face of the outer Wall and under the plate 5 thus bracing this plate and holding it more surely in engagement withthecross bricks when subjected to the intense heat.

What I claim as new is In a wall structure, the combination of an inner wall formed of refractory brick comprising cross brick projecting from the outer face of the inner wall, said cross brick having a projecting lip on its projecting end; an I 

